A little gotcha is that you need to be aware of the namespaces within your schemas, or the output of your map will be less than desirable.
Let's take a simple scenario. I'm mapping one source schema to a single destination schema.
In this example, I'm trying to iterate through a node and essentially pass the input parameter through:
Unfortunately my output looks a little small:
Interesting. Not a single error, but not what I was expecting.
The problem here is that with my XSLT code, I overlooked the namespace of my source schema. To get the proper namespace, I save the latest version of my map, validate it,
...and then take a look at the output XSL file. The location of this file is displayed in the output window.
Within the .xsl file, I will now be able to get the proper namespace of my schema,
In this case, the namespace is s0, as in s{zero}. Now I can apply this to my XSTL Call functoid.
A subtle difference, with drastic results: